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Last updated on April 23, 2014 at 1:22 EDT

Medicine Reference Libraries

Page 14 of about 170 Articles
HIV
2011-01-26 14:08:59

Human immunodeficiency virus (HIV), a lentivirus, causes acquired immunodeficiency syndrome (AIDS) which is a condition in humans were the immune system begins to fail, leading to life-threatening opportunistic infections. Infection is transferred through bodily fluids where HIV is present as both free virus particles and within infected immune cells. The four most common routes of infection...

Herpes Zoster
2011-01-24 12:56:26

Herpes zoster (or zoster), is known as shingles or zona and is a viral disease characterized by painful skin rash with blisters in a limited area on one side of the body. Initial infection causes chickenpox. Once chickenpox is over the virus remains in the body and can cause shingles. It can become latent in the nerve cell bodies and sometimes in the dorsal root, cranial nerve, or autonomic...

Hepatitis A
2011-01-24 12:50:52

Hepatitis A, caused by hepatitis A virus, is an acute infectious disease of the liver that is transmitted person to person by ingestion of contaminated food or water or through direct contact with an infectious person. Millions of people are believed to become infected with HAV every year. The incubation period is two to six weeks and on average is 28 days. In less developed countries the HAV...

Classical Swine Fever
2011-01-24 12:46:33

Classical swine fever, or hog cholera, is a contagious disease of pigs and wild boar. It causes fever, skin lesions, convulsions, and usually death within 15 days. Symptoms are indistinguishable from those of African swine fever. CSFV, previously called hog cholera virus, is the infectious agent. It is closely related to ruminant pestiviruses which causes Bovine Viral Diarrhea. Effects vary...

Herpes Simplex Virus 1 and 2
2011-01-20 19:35:34

Herpes simplex virus 1 and 2 (HSV-1 and HSV-2), are two members of the virus family Herpesviridae that infect humans. They are both ubiquitous and contagious and can spread when an infected person is producing and shedding the virus. Symptoms include watery blisters in the skin, mouth, lips, or genitals. Lesions usually heal with a scab characteristic of herpetic disease. HSV-1 and -2 remain...

Hepatitis C Virus
2011-01-20 19:23:30

Hepatitis C virus (HCV) is an enveloped, positive-sense single-stranded RNA virus of the family Flaviviridae. It consists of a core of genetic material surrounded by an icosahedra protective shell of protein. The genome consists of a single open reading frame that is 9600 nucleotide bases long. HCV replication takes several steps. It primarily replicates in the hepatocytes of the liver. It...

Hepatitis B Virus
2011-01-20 19:14:56

Hepatitis B virus, HBV, is a part of the Hepadnaviridae family of viruses. HBV can lead to cirrhosis and hepatocellular carcinoma and has been linked to pancreatic cancer. It is classified as a species of the Orthohepadnavirus. Similar viruses have been found worldwide in great apes and monkeys. There a few different genotypes and they all differ by at least 8% of the sequence and have...

Orf
2011-01-12 16:45:59

Orf, an exanthemous disease, is caused by a parapox virus primarily occurring in sheep and goats. It has many other names including thistle disease, scabby mouth, and sheep pox. It can infect humans as well. It is a zoonotic disease meaning that humans contract the disease through direct contact with infected animals. Generally there are no systemic symptoms. The finger, hand, arm, face,...

Foot-and-mouth Disease
2011-01-12 16:40:04

Foot-and-mouth disease, FMD, is sometimes fatal and is highly contagious for cloven-hoofed animals. Along with hooved animals hedgehogs and elephants are susceptible to the disease as well. Llama and alpaca can develop mild symptoms but are resistant to the disease and don't pass it to other species. Mice, rats, and chickens have been infected artificially in a lab but it is not believed they...

Dengue Fever
2011-01-12 16:33:15

Dengue fever and dengue hemorrhagic fever (DHF), caused by the dengue virus, is among the spectrum of acute febrile tropical disease and is transmitted by mosquitoes. Occurring mainly in the tropics it can be life threatening and is caused by four closely related virus stereotypes of the genus Flavivirus. It was identified and named in 1779. It has a nickname of "breakbone fever" due to it...